I am using an AdvancedDataGrid to display some data. Column 1
holds Quota Group names as the tree, and leaf nodes are dates.
Column 2 holds the number of people who have completed a survey.
The user can choose to see the data as is (normal mode, meaning how
many people completed on a certain day), or as cumulative, where
they see the total amount on each day. When it's in normal mode I
have it summing on each group and summing at the very end with no
problem, but when it's in cumulative mode I only want it to sum the
max from each group into the very last total box. I tried creating
a custom sum function but it only returns a 0. Any ideas?